Alert archive / Mississippi / Flash Flood Warnings in 2019

Flash Flood Warning 9, NWS Mobile, AL

May 11, 2019Stone County, Mississippi

NWS Mobile, AL issued this flash flood warning at May 11, 2019, 6:22 PM CDT for Stone County, Mississippi. It was in force for 6 hr. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 11, 2019, 6:22 PM CDT (23:22 UTC)
Expired
May 12, 2019, 12:15 AM CDT
In force
6 hr
Issued by
NWS Mobile, AL
Area
Storm-based polygon
Emergency
Flash flood emergency
Flood severity
None

County Stone County, MS

The radar

The Mobile radar (KMOB), 90 km from the middle of the area, began a volume at 23:21 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
May 11, 6:58 PM CDTFLASH FLOODPerkinston, MSNUMEROUS ROADS UNDER WATER WITH HIGH WATER RESCUES ONGOING ACROSS THE COUNTY. SEVERAL VEHICLES TRAPPED ON ROADWAYS BY WATER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.4 hours before the alert went out and 80 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Slidell Radar S, LA at 12:00Z on 2019-05-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1608 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 12:00Z on 2019-05-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 63 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1608 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
828 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
63 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted.

099 
WGUS54 KMOB 112322
FFWMOB
MSC131-120515-
/O.NEW.KMOB.FF.W.0009.190511T2322Z-190512T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Mobile AL
622 PM CDT Sat May 11 2019

...FLASH FLOOD EMERGENCY FOR STONE COUNTY MISSISSIPPI...

The National Weather Service in Mobile has issued a

* Flash Flood Warning for...
  Stone County in southeastern Mississippi...

* Until 1215 AM CDT.

* At 620 PM CDT, Stone County Emergency Management reports numerous 
  high water rescues ongoing in Stone County Mississippi. Numerous 
  roadways are closed due to flash flooding. Stone County Emergency 
  Management officials encourage residents to stay off the roadways. 
  Widespread rainfall amounts of 9 to 13 inches has been reported 
  across much of Stone county, including around the Wiggins, 
  Perkinston, and Whites Crossing communities. Additional 
  thunderstorms will bring additional very heavy rains through the 
  evening hours. 

  THIS IS A FLASH FLOOD EMERGENCY FOR STONE COUNTY MISSISSIPPI. THIS 
IS A PARTICULARLY DANGEROUS SITUATION. SEEK HIGHER GROUND NOW!

* Some locations that will experience flooding include...
  Wiggins, Perkinston and McHenry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. This is an extremely dangerous and
life-threatening situation. Do not attempt to travel unless you are
fleeing an area subject to flooding or under an evacuation order.

&&

LAT...LON 3091 8934 3090 8889 3069 8890 3068 8919
      3070 8934

$$
1 follow-up statement
123 
WGUS74 KMOB 120145
FFSMOB

Flash Flood Statement
National Weather Service Mobile AL
845 PM CDT Sat May 11 2019

MSC131-120515-
/O.CON.KMOB.FF.W.0009.000000T0000Z-190512T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stone MS-
845 PM CDT Sat May 11 2019

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 AM CDT FOR
STONE COUNTY...

At 835 PM CDT, Stone County Emergency Management reported that high 
water rescues had come to an end. However, numerous roads remain 
closed with significant flash flooding still ongoing throughout the 
county. 

At 840 PM CDT, Doppler radar indicated that the the heaviest showers 
and thunderstorms were exiting to the east of Stone county, with 
only a few left over light rain showers. Widespread 9 to 13 inches 
of rain has fallen, so excessive runoff from heavy rains will 
continue to result in flash flooding this evening. Never attempt to 
cross a flooded roadway. 

Some locations that will experience flooding include...
Wiggins, Perkinston and McHenry. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

&&

LAT...LON 3091 8934 3090 8889 3069 8890 3068 8919
      3070 8934

$$

The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 10, 8:01 PM CDTSpecial Weather StatementMOBGreene44 min
May 10, 8:39 PM CDTAreal Flood AdvisoryMOBStone3 hr
May 10, 9:54 PM CDTSpecial Weather StatementMOBStone36 min
May 10, 10:07 PM CDTAreal Flood AdvisoryMOBPerry, Stone3 hr
May 10, 10:10 PM CDTSpecial Weather StatementMOBStone50 min
May 10, 10:18 PM CDTSevere Thunderstorm WarningMOBGeorge, Perry, Stone42 min
May 10, 10:46 PM CDTFlash Flood WarningMOBStone6 hr
May 10, 10:49 PM CDTSpecial Weather StatementMOBGeorge26 min
May 10, 10:55 PM CDTSevere Thunderstorm WarningMOBStone35 min
May 10, 11:18 PM CDTSpecial Weather StatementMOBGreene27 min
May 10, 11:22 PM CDTSpecial Weather StatementMOBGeorge23 min
May 11, 3:39 AM CDTSpecial Weather StatementMOBPerry51 min
May 11, 4:18 AM CDTSpecial Weather StatementMOBStone42 min
May 11, 4:28 AM CDTFlash Flood WarningMOBStone7 hr
May 11, 4:29 AM CDTSpecial Weather StatementMOBPerry46 min
May 11, 4:56 AM CDTFlash Flood WarningMOBPerry7 hr
May 11, 5:22 AM CDTSpecial Weather StatementMOBGeorge68 min
May 11, 5:26 AM CDTSpecial Weather StatementMOBGeorge64 min
May 11, 6:02 AM CDTSpecial Weather StatementMOBGreene43 min
May 11, 6:09 AM CDTSpecial Weather StatementMOBStone51 min
May 11, 7:02 AM CDTSpecial Weather StatementMOBGeorge58 min
May 11, 11:26 AM CDTFlash Flood WarningMOBGeorge, Perry, Stone6 hr
May 11, 12:01 PM CDTSpecial Weather StatementMOBGeorge44 min
May 11, 1:18 PM CDTSevere Thunderstorm WarningMOBStone42 min
May 11, 1:54 PM CDTSpecial Weather StatementMOBStone51 min
May 11, 2:46 PM CDTSevere Thunderstorm WarningMOBGeorge, Stone29 min
May 11, 3:48 PM CDTAreal Flood AdvisoryMOBGeorge3 hr
May 11, 5:11 PM CDTFlash Flood WarningMOBGeorge, Perry, Stone6 hr
May 11, 5:46 PM CDTSevere Thunderstorm WarningMOBStone44 min
May 11, 6:35 PM CDTSpecial Weather StatementMOBStone40 min

Nearby

Flash Flood Warnings in Mississippi, 2019Every flash flood warning in 2019

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.